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Arc

Description​

The Arc class, which inherits from VMobject, represents an arc.

Details​

The default drawing style for an Arc is a stroke rather than a fill.

Constructor Parameters​

  • radius (float, default=1.0): Radius of the arc.
  • start_angle (float, default=0.0): Starting angle of the arc.
  • angle (float, default=TAU / 4): Angle subtended by the arc.
  • arc_center (Point3D, default=ORIGIN): Center point of the arc.
  • kwargs (dict): Additional arguments for VMobject.

Attributes​

  • radius (float): Radius of the arc.
  • arc_center (Point3D): Center point of the arc.
  • start_angle (float): Starting angle of the arc.
  • angle (float): Angle subtended by the arc.

Methods​

  • from_points(cls, start: Point3D, end: Point3D, angle: float | None = None, radius: float = 1.0, **kwargs) -> Arc: Class method that creates an arc from the given start and end points. If angle is specified, it defines the arc; otherwise, radius is used to determine the arc.

Examples

Example 1​

An arc with a custom radius and angle.

from smanim import *

a = Arc(radius=1.5, angle=3 * TAU / 4)
canvas.add(a)
canvas.draw(crop=True, ignore_bg=True)
# canvas.snapshot(preview=True, crop=True, ignore_bg=True)
Example 1

Example 2​

An arc created from start and end points. Styled with a fill instead of the default stroke.

from smanim import *

arc_from_points = Arc.from_points(start=LEFT, end=UP, angle=TAU / 4, fill_color=RED)
canvas.add(arc_from_points)
canvas.draw(crop=True, ignore_bg=True)
Example 2